Conical container and method of making same



April 1 J. E. PAGE 2,279,289

CONICAL CQNTAINER AND METHOD OF MAKING SAME File d Feb. 13, 1959- 3 Sheets-sheet 1 INVENTOR JOHN E. PAGE ATTORNEY April 7, 1942. 5', PAGE 2,279,289

CONICAL CONTAINER AND METHODDF MAKING SAME Filed Feb. 13, 1939 s Shets-Sheet 2 INVENTOR JOHN E.PAGE

BY W -M./

ATTORNEY April7, 1942, J. E. PAGE 2,279,289

CONICAL CONTAINER ANIJMETHOD OF MAKING SAME Filed Feb. 13, 1959 s Sheets-Sheet s INVENTOR JOHN E. PAGE ATTO RN EY Patented Apr. 7, 1942 CONICAL CONTAINER, AND METHOD OF MAKING SAME John Ernest Page, Sydney, New South Wales,

Australia, assignor to Gibson Patent Containers, Ltd., Sydney, New South Wales, Australia, a corporation of New South Wales, Australia Application February 13, 1939, Serial No. 256,195 In Great Britain February 14, 1938 Claims.

which is adapted to hold and contain liquid and granular materials, which may be formed by a relatively few method steps that can be quickly and economically executed.

Conical containers of paper and paperboard materials as heretofore made are particularly weak at the apex end thereof where strength is most desired. The apex end of such prior art containers is neither wholly siftproof nor leakproof since the blank or blanks from which such containers are formed have been previously punctured or cut at the apex point in preparation for the assembly operation.

An object of this invention is to provide an improved conical container which may be economically formed from paper or paperboard or similar sheet materials, which is strong and sturdy in construction, reenforced at the apex end thereof, and which may be made leakproof and siftproof.

Another object of this invention is to provide an improved conical container formed from an uncut and unpunctured blank of paper or paperboard material, which may be suitably treated or coatedwith a moisture-resistant or oilresistant compound and which presents a tight unpunctured apex point surrounded by an unpunctured reenforcing skirt that embraces the apex end of the container body.

Another object of this invention is to provide an improved blank from which a leakproof and siftproof conical container may be formed.

Another object of this invention is to provide an improved method of assembling conical container bodies rapidly-and economically so as to a provide a highly serviceable container which may of such containers may be stacked together to occupy a minimum of space during shipment and storage.

A further object of this invention is to provide an improved leakproof and siftproof container for liquid, granular or powdered materials, having a leakproof apex reenforcing and a sealed closure at the enlarged end of the body which may be conveniently applied after the contents have been inserted, which is strong and rigid in construction, which is economicalto produce and tamper-proof, access to the contents being had by severing the apex end of the conical body to provide a convenient pouring spout or opening through which the contents may be discharged. Other objects of this invention will become apparent as the disclosure proceeds.

In accordance with this invention, a blank formed from suitable paper or paperboard marial having the requisite toughness and flexibility is provided, which blank may be treated on one or both surfaces thereof with any desired liquid-proof or grease-proof coating. The blank forming vthe container body comprises a generally tapered body portion which terminates at the apex end in an uncut, and unpunctured end portion which forms a continuous skirt surrounding the apex point and integrally joined to the body portion of the blank. The body portion of the blank is supplied with a suitable adhesive which may be applied in strip form along one side of the blank, which adhesive strip extends across the end portion, the adhesive being preferably applied to the inside face of the blank. The body portion is folded into tubular or conical form with the side edges thereof arranged in adhesively secured overlapping relationship to provide a generally conical body portion.. The end portion is then folded or wrapped around the lower end of the body portion with the apex point as a center so as to provide an enclosing skirt embracing the lower end of the body'portion. It will be particularly noted that the apex point and the surrounding skirt is neither cut nor punctured, providing in effect an impervious, unpunctured and uncut cup into which the lower end of the body portion extends and is integrally secured. Thus a conical container is provided, which may be made wholly leakproof and siftproof, and which is provided with substantial reenforcing at the apex end of the container body where strength is especially desired, the surrounding skirt'formed from the end portion also serving to maintain the container body in the desired tubular form.

body section, and then continuing to fold the resultant folded skirt around the reduced end of the body portion, which folded skirt becomes Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to its objects and advantages, and the manner in which it may be carried out, may be better understood-by referring to the following description taken in connection with the accompanying drawings forming a part thereof, in which:

firmly secured to the reduced end of the body portion by adhesive previously applied thereto.

A further method of assembly,iwhich combines both methods above enumerated, may also be employed. In this method of assembly, one half section of the blank is folded over the other half section, the glued securing flap alongone side-of the blank is folded over and pressed intoadhesive contact with the adjacent section; the thus folded blank is then expanded into a generally tubular form and telescoped over the end ofthe conical mandrel, and the' skirt then wound around and adhesively secured tothe reduced endof the body portion. r

'l'husit will be noted that when-theassembly operation on-the container bodies has-been com pleted, they may appear as f-ullyexpanded conical-bodies which may be arranged in nesting relationship to occupy a minimumofspace or they may be so formed as-to producea-container body in fiat collapsed form which then may be convenientlystacked one-upon another so as to 00- cupy a minimum of space, whichcollapsed bodies may be ready for immediate use to receive contents by expanding the same. i

i The conical container bodies thus formed-may beused, if desired, as drinking cups to holdeither -hot or .cold liquids. ..Ifit is desired toship or store the contents in the container bodies, a suitable closure membermay be.applied and sealed to the enlarged end thereof, so as to hold .the contents therein .in a leakproof manner. .Access to the contents maybe had eitherby removing the closure disc or portion thereof, butpreferably the sealed container is opened by severing the .apex end from the container body so that .the reducedwend of. the container body thus severed providesa highly. convenient and practical pouring spout for ejection of the. liquid or .powdered contents. The sealed cone-shaped containerthus formed is highly adaptedto containsuch products as lubricating oils, in which the oils are contained in a leakproof manner, fully sealed and closed against tampering, and when the apex end is removed the reduced pouring end provides .a convenient funnel-shaped spout through which the oils may be ejected into the crankcase of an automobile engine or other power engine without the provision of funnel equipment and Without spillage or loss of the contents. My improved sealed container is also highly adapted for con .taining milk, fruit or vegetable juices or other edible or non-edible liquids, granular, orpowdered materials. If only a fraction of the conparticular description and froman inspection of the accompanying drawings.

Fig, '1 is a face view of a prepared paper or paperboard blank from which my improved conicalcontainer is formed;

Fig. 2 is a perspective view of the prepared blank shown in Fig. 1 in the process of being wound over a conical mandrel and illustrates a step in the methodof forming the container;

.Fig. 3 is aperspective view of the conical mandrel and container-forming blank illustrating a further step in the formation of the container;

Fig. 4 is a perspective view of the conical container body as it appears when completed :and removed from themandrel;

EEg. 5 is a perspective view of a plurality of conical-shaped container bodies arranged :-in nested relationship, .so as to occupy a minimum of space duringshipmentand storage;

Fig. 6 is an elevational view of the conicalcontainer body showing. an .end closure applied thereto, certain :parts being :broken'away to illustrate certain details of the;construction;

Fig. 7 is an elevational viewof the container body showinga closure of somewhat modified form applied thereto, certain parts being broken away to. illustrate certain structural details;

'8 is a perspective view of the container shown in Fig. 6 havingthe tapered end:severcd from the container body to provide a pouring opening for the -container, this view showing the conical end inserted into the pouring opening in inverted position. to provide .a temporary closure therefor; p Fig. 9 is aface :view of. a prepared paper .or paperboard blank from which a conical container body of somewhat modified construction maybe formed; a Fig, l0-is a perspective 'view'of apluralityof completed conical containers, each formed :from the blank shown in Fig. 9 by a simple folding operation which produces a collapsed substantially .flat container body, a plurality of which may be stackedtogethenin collapsed condition-to conserve shipping and storage space;

Fig. 11 is a face view of aprepared blank from which a conical con-tainer body of-slightly modi- 'fied construction may be formed;

Fig, 12 is a perspective view of the blank-shown in Fig. 11 having opposed sections of the blank folded together in superimposed relationship, illustrating the initial step of an alternative meth- Fig. 13 is a perspective view of the=foldedblank .shownin ;Fig.- 12 havingapplied theretoa further step in the alternative methodof assembly;

.Fig, 14 is a perspective view of the folded blank shown in Fig.'13 telescoped over a conical mandrel ready .to receive a further winding and body forming operatiomand l -15iis aperspective view of theblank and .mandrelat the completion of the .container'boiiy forming operation.

Similar reference characters -.refer to similar parts throughout the several views-of the drawingsandthe specification. I

The 4 container forming blank from which the conical shaped'container body is formed is particularly adapted for assembly from a flexible paper or paperboard sheet of the requisite tensile strength to serve the purpose intended. The paper or paperboard blank is preferably formed from a high-grade kraft paper having substantial body, the thickness of the sheet varying from paper having a thickness comparable to that of wrapping paper to a fiberboard having a thickness up to {a inch or more in cases Where the container is to be of substantial size and to contain products of substantial weight. An important characteristic of my improved container is its leakproof and siftproof qualities, and thus it is admirably adapted for containing liquids such as milk or oils, among others, as well as fine granular materials. The body-forming blankmay be treated with a suitable coating so as to render the same liquid-proof and grease-proof, which coating. may be applied either to the interior or exterior surface thereof, or to both interiorand exterior surfaces, either while the sheet is in blank form or after thesheet has been formed into a completed conical container body.

The container formin blank, as shown in Figs. 1, 9 and 11, comprises generally a body forming portion I of generally tapered shape, the reduced end of which terminates in a bottom forming alongthe side edge of the body portion'l may be made to continue in a substantially straight line across part of the end portion 2; as at a illustrated in Fig. 1. tion-I may have a generally curvilinear contour I00, so that when the container body is formed a substantially fiat top edge is provided "for the a completed container body.

portion the center of which forms the apex of the completed conical container body. This end portion forms an important feature of my improved container forming blank, since it will be noted that this end portion is not cut or punctured in any manner or form, so that when a blank having the proper moisture-proof and grease-proof qualities is formed into the desired conical container body, the apex end, where leaks normally occur in the prior art conical container bodies, is positively liquid-tight.

The body-forming blank A, as shown in Fig. 1, comprises a body forming portion I having side edges 4 and 5 thereof tapering downwardly, with the reduced end of the body portion I terminating in an apex forming portion 2 the approximate center 3 of which forms the apex end of the container body. A fold line l3 extends from the apex point 3 along one side edge of the blank substantially parallel to the side edge 5 so as to define a securing flap [2 between the fold line 13 and the side edge 5 of the blank. The end portion 2 is preferably defined by a curvilinear or generally spiral shaped edge 8 which intersects the side edge 4 of the bodyportion at 6 and the side edge 5 of the bodyportion at I. A strip of adhesive a is applied to the inside face of the blank adjacent the side edge 4 thereof, which strip of adhesive is of such width as to define an edge section II] designed to overlap the securing flap l2 and a part of the body portion I. The inner edge of the overlap section 10 is indicated by the line H extending substantially parallel to the side edge 4 and intersecting the apex point 3. The interior surface between the fold line l3 and the line H forms the interior surface of the conical body. v An imaginary straight line 9 is shown drawn across the face of the blank through both'the body portion I and the end portion 2, so that the acute angle designated a: between the imaginary line 9 and the imaginary line H is the same as acute angle a: between the imaginary line 9 and the fold line [3. That section of the end portion to the right of the imaginary line 9 has been designated 2' and that section of the end portion to the left of the imaginary line 9 has been designated The strip of adhesive-a extending Blanks of the type shown in Fig. 1 are admirably adapted for formation into conical container bodies adapted to contain oil'y'products, such as lubricating oil, and may be made of such size as to contain a quart or moreof such oil. In making a container to contain, say, a quart of .oil,the blank may be so cut as to provide a conical container body whose larger end has any-desired diameter, but preferably the larger end should be from 4 to 6 inches in diameter and the container body from 6 to 12 inches in length when made to contain a quart of contents. It will be appreciated, however, that the conical pitch of the container may be varied within relatively wide limits as desired to conform to shipping, storage and marketing conditions and requirements.

In forming a container for oils, it'is preferable to coat the interior of the heavy paper or fiber blank with a suitable-oil and grease resistant coating, such as a liquid flowable cellulose lacquer or other known oil and grease resistant coatings, before the blank is'assembled incontainer form, andit isdesirable to apply such a coating to both the interior forming andexterior forming surfaces of the blank. Where such an oil resistant and grease resistant coating isused, it has been found that the strips of adhesive 11 and a may comprise a suitable solvent or softening component for such coating materials,.so that the coating itself when in soft or plastic condition will serve to obtain firm adherence between flap l2, the body portion and the overlapping section Ill. It is appreciated, 'however, that other glue or adhesive compounds known in the art may be used and applied to the blank as above indicated for causing thesecuring fiap I2 and the overlapping section In to firmly adhere, and also to cause the overlapping section I0 to firmly adhereto the exterior surface of the body which it overlaps, as shown in Fig; 4.

The blank shown in Fig. '1 may be easily and quickly shaped into a conical container body by winding the same around a suitably shaped conical mandrel M in the mannerillustrated in Figs. 2-and 3. In performing this assembly operation, it is preferable to fold the securingflap 12 backwardly over the exterior of the body portion I before the blank is applied to themandrel M. The blank is so arrangedthat'the apex end p of the mandrel M is positio'nedadjacent the apex forming point- 3 of the blank. A suitable clip e fixed .to the mandrel M may be provided for gripping and holding one'side edge of the blank adjacent the wide end thereof to the mandrel. The conical surface s of the mandrel may be covered with a frictional surface, such as soft rubber, and may be roughened or corrugated to prevent the blank from slipping. The blank is wound around the mandrel M, either by turning the mandrel M by suitable driving means and holding the blank by means of some suitable relatively stationary but flexible element in hugging contact with the mandrel, or by holding the mandrel M stationary and providing a suitable moving element for winding the blank around the same. The mandrel M is of such size and shape- The wide edge ofthe body poras to de'flne the desiredinterior surfacezof the conicalcontainer body.f': .i

when the=bod3r portion l has'been wound-completely :aroundthe nnandrel, "the securing :section in willoverlapaand adhere to the rebent securing flap l2 and to the'adjacent exterior section of the body/ rtion l, nsrclearly. shownin-Figs. 3 and 4. When this has-beenlaccomplished, the endsection .2" will have beenbrought into overlapping relation to the interior surface of the end section if which-has previously received the adhesive, .so that a double-ply end portion or skirt, as shown in. Fig. :3, will bev formed. With continued of the .blankaroundthe mane drel, ithe double-pigskin will continue to be wound around theapex end of. the conical container body. Adhesive, glue or other tenacious bindera" is applied. totheexterior surface of the end 5 section 2 either while the blank, is. in flat expanded form, as shown in Fig. 2-, or during the winding operation. The -,g'lue or adhesive it" causes the end portion. to. .flrmly. adhereto the apex end of the body portion..l.,-so' that when completedthe conical container body has atleast a full double-ply wrap around the apex end thereof, as shownin Fig. '4; Thus the endportion 2 when fully formedprovides an unpunc tured cup forming'an-integral partof'the'body portion -l and-into -which the body portion extends. By cuttingthe: end portion"! 'so .as to provide an exterior' edge' 8 'of.-the..,proper curvilinear or substantially. spiral'shapathis edge 8 of :the'end portion wound-around the .apex end ofthe bodyiportionwillprovide a "smooth and even shoulder, as shown :in Figs. 4 anclfi. The free edge 9 of {the end ,portion is unscored'and unbroken and the apex end 3isalso unpunctured, so that when. the sheets forming the'blanks are properly treated withmoisture or grease .resis'tant coating, aiullyxliquid-proof, oilproof and grease-.proof-container-is provided.

airolled edge formed on the container body, which rolled edge comprisesan outturned and reverse turned flange FIB-and an'end portion .20 seating between the flange l 'lt'and'the body lot the container. "Ihe rolled edge of' the container body comprising'the portions I9 and 20 may beformed by a rolling or spinning operation customary in the artand the ielosuredlsc l5 may be crimped to this rolled edge by a. crimping operation, so that the closure'disc i5. is permanently .andflxedly secured and sealed to "the mouth of the container body in a leakproof and siftproo'f manner.

In the form shown in Fig; 6,the contents may be removed by forcibly removing the closure disc l5 or, if desired, the'closuredisc :lfimay be provided with a suitable discharge outlet of suitable size to permit the liquidor granular contents "C to be readily removed. The discharge outlet 2| may be closed by: a suitable cap member 23- having a downward-turned flange or rim 24 which grips the upturned rim or flange 22 surrounding the discharge outlet 2I.

A further alternative form of body closure is I illustrated in Fig.7, wherein an end closure disc The liquid-proof and grease-proof coating sapplied to the interior surface of the blank iorms a liquid-tight and oiltight seal at the joint :1 as shown in Fig. $1,. :and this is particularly true where 'a-coating is used which is rendered plastic or soft by a suitable solvent or a. softener" therefor (herein also referred to as an adhesive) since this softener permits the subjoined coated surfaces of the'overlapping section. l0 and the se-,

curing flap L2, for-the gadjacentsection of the body portion to .flow together to form a liquid rand oiltight bond; It, is also appreciated that after completion of the containerbodies they maybe sprayed with ,ordipped in the desired coating solution to render them liquid-tight'and oiltightl Where milk or. other. foodstuffs are tobe packed in the container'bodies,,.a wax-coating applied while, the wax is in;molten form has been found satisfactory Wherepilyi or greasy materials :are

'Iheupstandingrim it merges into'a downwardly extending flangef'l'! positioned exterior to the container body, which flange'terminates in an in turned in) l8-which seats under oris crimped to 25, made of metal or suitable paperboard, is provided with a reverse bead or groove around the peripheral edge thereof, intowhich the inturned flange portion 28 of the container body extends. The reverse head or groove is formed by peripherallyextending inturned rim portion 28 and a peripherally extending outturned rim portion 21 between which the inturned flange of the container-body seats, the rim portions 26 and 21 being tightly crimpedto the flange portion 28 to provide a liquid-tight and siftproof seal.

Still a further alternative form of body'closure may be employed wherein the endclosure is spun or crimped to the container -body'beiore 'the con-, tents are inserted, the end closure having an aperture'through which the contents are introduced to the container; after the filling operation is completed the aperture in the end closure is sealed.

It will be appreciated that numerous other types of closures known in the art may behemployed to close and seal the open mouth of the container body. I v

'QLiquid orgranular contents having pouring qualities, can most conveniently be removed from the conical container by severing the apex end of'the conical container body along line H adjacentfthe peripheral edge 8 of the end forming portion. The opening the apex end of the container thus formed provides an admirable "and highly convenient pouring spout from which .of the conical body, the same can generallybe produced at greater speed and less cost. The

pouring spout is formed at the reduced end of the conical'bojdyb'yputting away the end portion 2, and provides a' highly convenient dispensing opening for pouring such liquid materials as lubricating oils into the crankcase of automobile engines, sincethe'reduced'pouring spout end of the'container can be readily inserted into the oil supply pipe without danger of spillage and without the provision of a pouring funnel commonly employed; v

- The container is also admirably adapted for holding milk, fruit juices and other edible liquids and granular materials, all of which can be conveniently poured out of the pouring spout formed by cutting away the end portion 2. As shown in Fig. 8, the end portion 2 can then be inverted and inserted into the reduced pouring opening to provide a temporary cork or stopper, protecting the contents remaining in the container from dust and contamination.

It will be appreciated that my improved cone tainer body may be formed and assembled in fiat folded condition, as illustrated in Figs. 9 and 10. When this method of assembly is used, a blank A, as shown in Fig. 9, is provided, made similar in shape to the blank A shown in Fig. 1. Score lines I3 and 3I, radiating outwardly from the apex point 3 of the end portion, are provided so as to define a reverse fold securing flap I2 between the side edge of the blank and the score line I3 and an overlapping securing flap I0 between the side edge 4- of the blank and score line 3|. A substantially straight score line 29 traverses the blank andextends through the body portion I and the end portion 2 and is so positioned that the section 33 of the body portion which lies between score lines 29 and 3| is equal in' size and dimensions to the body section 33 between the score line 29 and the score line I3. A suitable adhesive, which may be of various materials as above indicated, is applied to the overlapping securing flap Ill between the side edge 4 of the blank and thescore line 3I, which strip of adhesive also traverses the end portion 2 of the blank to provide adhesive a to a section of the inside face of the end portion. Adhesive a is alsoapplied to a section of the outside face of the end portion 2 as indicated by the stippl lines shown in Fig. 9. I When the blank shovm in Fig. 9 has been thus prepared, the container body is formed by first folding thebody section 33' over the body'section 33 along the fold line ,29, and by this operation the end section 2" is also folded over and brought into adhesive contact with the end section 2'. The securingfiap I2,also is pressed into adhering contact with the glued face of the securing flap ,lflswiththe score. line. I3 in registry with the score line 3|. The securing flap II], and with it the securing flap I2, is then bent over so that theglued, face of the securing flap I0 is brought into adhesive contact with the outside face of the .body section 33, which operation also brings .the glued face of the superimposed triangular the outside face of the securing flap Ill and to any adjacent exposed portion of the body section 133, at'the completion of which the end portion hasbeen folded oncecompletely arouncl the lower end of the conical body. Triangular shaped sections 31 and 31, previously folded together into adhesive contact, are then folded over the triangular shaped section 35,-as illustrated more particularly in Fig. 10, completing the formation of the container body. 7

It will be noted that the end portion thus forms an uncut and unpunctured skirt which surrounds the lower end of the body portion I, forming in effect an uncut and unpunctured cup into which the body portion extends. It will be particularly noted that the apex point 3 is not cut or severed and the cup forming the skirt is itself completely closed, since the folded edge 29 of the end portion which forms the end of the wound skirt is also unsevered and uncut. The overlappedarrangement of the securing flaps I2 and II] also forms a leakproof joint in the body portion byreason of the fact that adhesive material fully seals the joint at 11 There is shown in Fig. 11 a blank A generally similar in construction to the blank ,shown in Figs. 1 and 9, the main difference being that the securing flap I2, shown in Figs. 1 and 9, has been eliminated. In this construction, the fold line 5I extends from the apex point 3 radially across the body portion and generally parallel to the side edge 45 thereof. A fold linef29 extends across the body portion I and the end portion 2 medially between score line 5| and the side edge 45 of the blank, so as to provide a body section 33 between the score line 29 and the score line 5| equal in size and dimensions to the body section 33' between the score line 29 and the side edge 45 of the blank. Adhesive is applied in a strip a to the securing flap I0 and in a strip a to the end portion 2. A score line 45 radiates outwardly from the apex point 3 and is generally in line with the side edge 45 of the body portion.

The blank shown in Fig. 11 is formed into conical shape by folding the body portion33' over the body portion 33 along the score line 29, which operation also folds the end section 2" over the end section 2', as illustrated more particularly inFig. 12. Adhesive a has been pre- 'viously applied or is then applied to the outside face. of the end section 2", as shown in Fig. 12. In the next step,'shown in Fig. 13, the glued securing flap In is folded over the adjacent side edge of the body section 33', and a portion of the glued end section 2" is folded over the reduced end of body section 33 'and pressed into adhesive contact therewith, as shown in Fig. 13.. Up to this point, the folded blank, as shown in Fig. 13, is in substantially fiat collapsed condition. The body portion is then expanded into gener ally tubular formby exerting compressive pressure on the body portion applied along'the fold lines 29 and 5I, and the thus expanded tubular body portion 'is slipped over the conical end of the forming cone M, as shown in Fig. 14. The end portion 2, which provides a double-ply skirt formed bythe overlapped end sections 2' and 2", is then wound around the reduced end of the body portion, as indicated in Figs. 14 and 15. As thus formed, the skirt'serves to maintain the body portion in generally tubular or expanded conical form, and when removed from the conical mandrel M, will maintain its generally expanded conical form.

Upon completion of the winding operation shownin Fig. 15, the container body is removed from the conical mandrel M. If edible contents, 'such'as milk, fruit and vegetable juices or other edible products, are to be packaged therein, the conical body may be sprayed with or dipped in a bath of molten wax, which serves to permanentlyseal the joint :11 in the body portion so as to make the joint leakproof and siftproof. Where the molten or hot wax is applied to ,thejoint y, it has been found that this molten wax willprovide an effective seal to prevent leakage of such contents as milk, fruit, vegetable juices, and other materials that 'do not have a dissolving effect on the wax.

The containers illustrated in :Figs. 1 to 10 in clusive are well adapted for containing oil. If

oils, and particularly lubricating oils, are to be contained in the container, it may be desirable to dip the containerbody in or spray the'inte- -rior *or exterior of the container body with a grease and oil resistant compound, of which there are several knownand available, such. as cellulose esters, resins, and various phenolic compounds.

It will be appreciated that the blanks, as'shown V in Figs. "1, 9 and 11, from which the conicalcontainer bodies are formed, may first be treated with the selected liquid or oil resistant coating enlarged end of 'the conical body maybeclo'sed by numerous different forms of end closures formed either of metal or paperboard or a combination of metal and paperboard, which may be criinpedyrolled, sweat'ed, or otherwise locked or fixed to the up'p'er'rim of'the container body after theco'ntents have been inserted.

"It will be understood that where the'term fadhesive or "glue is herein-used, itispintended' to cover any well 'known glue or-adhesive used in the"container industry or may =also include=a solvent for the coating covering the surfaceof the'container'formingblank.

While Ihave-di'sclosed as an "example and 'embodimerit 'of my invention the-container forming bIankJthe conicaI container and methods of forming 'same, the disclosed embodiments are :to be considered "in all -respects as illustrative and not restrictive, the scope of the invention rbeing indicated 'by" the appended claims rather than by the foregoin'gdesc'ription,and all changes which come within themeaning and range :of -equivalen'cy of the claimsare therefore intended tobe 'embracedtherein. l

"What is claimed is:

1. A conical container forming blank- 0f sheet material havingabody forming portion :defined by converging 'sideedgesadapted to-be arranged in'ov'erlapped relationship, and *an-end:,por-tion integral with and wholly unsevered from said body "portion, said end :portion having :parts thereof extending laterally' beyon'd 'bothof the adjacent converging ends of'said'sideedges.

'2. A one-piece blank adapted to rformra conicalcontainer including, a body forming; portion having'converging side'edges adapted to be aria'n'ged in "overlapped relationshipfland an end portion-integral with" and wholly unsevered from said bo'dy portion, said end "portion having'an un'severedanduncut apex area therein surroundeol by an" uncut and unpun'cturedfskirt portion cii-cumscrib'ed by a substantially curvilinear :edge which extends laterally' beyond both of Zthe 'adfiacent sideedges ofsaid :body portion.

'3. A one-piece blank adapted to form atonical container including, a body forming portion having converging scorelines which converge into an uncut and unscored apex forming point, securing flaps hinged to said body portion along 'eachof said score lines adapted to'be arranged inoverlapping relationship to provide a conical body portion, and an uncut and unpunctured end portion having a skirt surrounding .said apex point, said end portion having a generally curvilinear contour whose edges extend=laterallybeyond both of the adjacent side 'edges of the body portion. l

4. -A'one-piece blank adapted to form a conical container body including, a body forming portion having converging side'edges, a symmetrical end portion integral with and wholly unsevered from said body portion extending laterally beyond the adjacent side edges of the body portion, and a strip of adhesive extending along one side edge of said body portion and across "said end portion.

5. The method of forming a conical container body from a paper or paperboard blankhaving a body portion defined by converging side edges andan end portion wholly unsevere'd from'said body portion extendinglat'erallybeyond both 'o'f the adjacent side edges of'the bodyportion which method includes the steps of applying -a strip'of adhesive to a side edge of said body portion and a section of said end portion, folding saidfbody portion into generallytubular form, folding said end portion to provide a double-ply skirt section and pressing adhesive applied to aside edge into adhering relationship to the adjacent side ed e of the body portion, and thereafter wrapping and adhesively securing said double-ply skirt section aroundthe reduced conical end of said body portion. V

'6. The method of form n a conical container body "from a singleblankof paperboard material which blank has a body forming portio defined by converging side edges and an unpunctured end portion integrally. formed with .and unsev ered'from .said body portion, which methodinl- 'cludes the steps of, folding one section fof .said bodyLportion and said end .portion over another section of said body portion and endyportlon along a generally straight lfold line, adhesively securing'the free edges of said body sections and .said endsections together, expanding the thus folded blank, telescoping thesame over a conical mandrel, and thereafterwrapping and adhesively securing said end sections around th reduced end o'fthe body portion. y

'7. The method of forming a conical container body from a single blankof paperboard material which blank hasabody forming portion definedby converginglside edges and anunpunc tured'end portion integrally formed withand unsevered from said body portion, which methodim eludes-the steps of, folding one section of "said end portion over and securing said section-t0 another'section thereof, wrapping said body por:

tion around a conical mandrel, adhesively securing .the free edges of said body portion together, and I thereafter wrapping, and adhesively securing said end sections around the reduced end of :the

.bodyportiom 8. Aleakproof .andsift-proof container of-;generallywconical form including 'a body member having a. plural-plyweenforcing cup integrally .formed with-and embracing the reduced zendiof said body member, said body-'memberandficup :bemgiormed; from anblank of sheet material having a body forming portion defined by converging side edges adapted to be arranged in overlapped relationship, and an end portion integral with and Wholly unsevered from said body portion, said end portion having parts thereof extending laterally beyond both of the adjacent converging ends of said side edges and a closure member fixedly secured to the enlarged end of the conical body member.

9. A leakproof and siftproof container of generally conical form including a body member having a plural-ply reenforcing cup integrally formed with and embracing the reduced end of said body member, said body member and cup being formed from a blank of sheet material having a body forming portion defined by converging side edges adapted to be arranged in overlapped relationship, and an end portion integral with and wholly unsevered from said body portion, said end portion having parts thereof extending laterally beyond both of the adjacent converging ends of said side edges and a, closure member fixedly secured to the enlarged end of the conical body member, said plural-ply reenforcing cup bein severable from the container body to provide a pouring opening at the reduced end.

10. A leakproof and siftproof container of generally conical form including a, body member having a plural-ply reenforcing cup integrally formed with and embracing the reduced end of said body member, said body member and cup being formed from a blank of sheet material having a body forming portion defined by converging side edges adapted to be arranged in overlapped relationship, and an end portion integral with and wholly unsevered from said body portion, said end portion having parts thereof extending laterally beyond both of the adjacent converging ends of said side edges and a closure memberfixedly secured to the enlarged end of the conical body member, said plural-ply reenforcing cup being severable from the container body to provide a pouring opening at the reduced end and being of sub- 20 stantial body thickness so that inverted and inserted into said pouring opening it provides a temporary closure stopper for said container.

JOHN ERNEST PAGE. 

